Allow rooms to have an ephemeral chat history (delete history after X amount of time)

[trosel]

Rationale

Maintaining an eternal log of everything you've ever said has caused many problems for people. Many even delete their tweets on a rolling basis.

Room settings should have a Delete chat history every ___ days setting.

Chat rooms can be used as wikis or forums, but should they? In most cases, no.

Implementation

I know this is difficult because of the federated system of matrix. But what I'm thinking is that when/if a server requests to co-host a room from another server, part of this initial sync will include syncing on the ephemeral history setting and matching up their clocks. Just a thought.

[trosel]

Update: The Room Admin Specified Per Room Retention Proposal is what I'd like to see. Not the server admin specified. Or at the least, I'd like to see both.

[aaronraimist]

Yep as you saw there is already a proposal for that and a Riot issue here element-hq/element-meta#729